Five western states -- California, Oregon, Washington, Arizona, and Hawaii -- have funding to implement comprehensive programs and have begun to develop strategies for statewide implementation of the United States Public Health Service guidelines. Lacking sufficient information and resources individually, this grant will allow these states to pool their experience and information about how to assist health plans, providers, purchasers, and state agencies to define their respective roles and to collaborate on delivering evidence-based cessation services. Further, these states propose combining and standardizing protocols and tools, and providing technical support to assist implementation in each state by forming a two-year Pacific Center on Health and Tobacco.Specific deliverables will include a guidebook and tool kit for implementing cessation best practices across statewide systems. The project will be considered successful if the guidebook and tool kit are widely disseminated through SmokeLess States programs and other national technical assistance facilities, and are employed to improve or accelerate the development of other state tobacco cessation initiatives.